diff --git a/htroot/Crawler_p.java b/htroot/Crawler_p.java
index 57e5fc32c..0bcde88ad 100644
--- a/htroot/Crawler_p.java
+++ b/htroot/Crawler_p.java
@@ -392,7 +392,7 @@ public class Crawler_p {
                 for (DigestURI u: rootURLs) {
                     hosthashes.add(ASCII.getBytes(u.hosthash()));
                 }
-                sb.crawlQueues.errorURL.removeHost(hosthashes, true);
+                sb.crawlQueues.errorURL.removeHosts(hosthashes, false);
                 for (byte[] hosthash: hosthashes) {
                     try {
                         String deletequery = CollectionSchema.host_id_s.getSolrFieldName() + ":\"" + ASCII.String(hosthash) + "\" AND " + CollectionSchema.failreason_s.getSolrFieldName() + ":[* TO *]";
diff --git a/source/net/yacy/cora/document/ASCII.java b/source/net/yacy/cora/document/ASCII.java
index 5b0cd36b6..578616fa6 100644
--- a/source/net/yacy/cora/document/ASCII.java
+++ b/source/net/yacy/cora/document/ASCII.java
@@ -133,4 +133,15 @@ public class ASCII implements Comparator<String> {
         }
         return b;
     }
+
+    public final static byte[] getBytes(final String s, final int beginIndex, final int endIndex) {
+        assert s != null;
+        //assert s.length() < 3 || s.charAt(2) != '@';
+        int count = endIndex - beginIndex;
+        final byte[] b = new byte[count];
+        for (int i = 0; i < count; i++) {
+            b[i] = (byte) s.charAt(i + beginIndex);
+        }
+        return b;
+    }
 }
\ No newline at end of file
diff --git a/source/net/yacy/crawler/CrawlStacker.java b/source/net/yacy/crawler/CrawlStacker.java
index 02c487f33..df0f49d34 100644
--- a/source/net/yacy/crawler/CrawlStacker.java
+++ b/source/net/yacy/crawler/CrawlStacker.java
@@ -27,7 +27,9 @@ package net.yacy.crawler;
 import java.io.IOException;
 import java.net.InetAddress;
 import java.net.MalformedURLException;
+import java.util.ArrayList;
 import java.util.Date;
+import java.util.List;
 import java.util.Locale;
 import java.util.Map;
 import java.util.Properties;
@@ -184,6 +186,9 @@ public final class CrawlStacker {
             final byte[] urlhash = url.hash();
             if (replace) {
                 this.indexSegment.fulltext().remove(urlhash);
+                byte[] hosthash = new byte[6]; System.arraycopy(urlhash, 6, hosthash, 0, 6);
+                List<byte[]> hosthashes = new ArrayList<byte[]>(); hosthashes.add(hosthash);
+                this.nextQueue.errorURL.removeHosts(hosthashes, false);
                 this.nextQueue.removeURL(urlhash);
                 String u = url.toNormalform(true);
                 if (u.endsWith("/")) {
diff --git a/source/net/yacy/crawler/data/CrawlQueues.java b/source/net/yacy/crawler/data/CrawlQueues.java
index 80316f187..bff9bce48 100644
--- a/source/net/yacy/crawler/data/CrawlQueues.java
+++ b/source/net/yacy/crawler/data/CrawlQueues.java
@@ -161,6 +161,7 @@ public class CrawlQueues {
     }
 
     public void removeURL(final byte[] hash) {
+        assert hash != null && hash.length == 12;
         this.noticeURL.removeByURLHash(hash);
         this.delegatedURL.remove(hash);
         this.errorURL.remove(hash);
diff --git a/source/net/yacy/crawler/data/ZURL.java b/source/net/yacy/crawler/data/ZURL.java
index 6970819fd..226907325 100644
--- a/source/net/yacy/crawler/data/ZURL.java
+++ b/source/net/yacy/crawler/data/ZURL.java
@@ -136,13 +136,18 @@ public class ZURL implements Iterable<ZURL.Entry> {
         if (hash == null) return false;
         //System.out.println("*** DEBUG ZURL " + this.urlIndex.filename() + " remove " + hash);
         try {
+            Iterator<byte[]> i = ZURL.this.stack.iterator();
+            while (i.hasNext()) {
+                byte[] b = i.next();
+                if (NaturalOrder.naturalOrder.equal(hash, b)) i.remove();
+            }
             return this.urlIndex.delete(hash);
         } catch (final IOException e) {
             return false;
         }
     }
     
-    public void removeHost(final Iterable<byte[]> hosthashes, final boolean concurrent) {
+    public void removeHosts(final Iterable<byte[]> hosthashes, final boolean concurrent) {
         if (hosthashes == null) return;
         Thread t = new Thread() {
             public void run() {
diff --git a/source/net/yacy/crawler/retrieval/HTTPLoader.java b/source/net/yacy/crawler/retrieval/HTTPLoader.java
index 09ac43511..248a9e8d5 100644
--- a/source/net/yacy/crawler/retrieval/HTTPLoader.java
+++ b/source/net/yacy/crawler/retrieval/HTTPLoader.java
@@ -34,7 +34,6 @@ import net.yacy.cora.protocol.RequestHeader;
 import net.yacy.cora.protocol.ResponseHeader;
 import net.yacy.cora.protocol.http.HTTPClient;
 import net.yacy.cora.util.ConcurrentLog;
-import net.yacy.crawler.data.Cache;
 import net.yacy.crawler.data.CrawlProfile;
 import net.yacy.crawler.data.Latency;
 import net.yacy.crawler.data.ZURL.FailCategory;
diff --git a/source/net/yacy/search/Switchboard.java b/source/net/yacy/search/Switchboard.java
index 84394ca7f..566ba979b 100644
--- a/source/net/yacy/search/Switchboard.java
+++ b/source/net/yacy/search/Switchboard.java
@@ -2903,6 +2903,9 @@ public final class Switchboard extends serverSwitch {
         }
         
         // remove the document from the error-db
+        byte[] hosthash = new byte[6]; System.arraycopy(urlhash, 6, hosthash, 0, 6);
+        List<byte[]> hosthashes = new ArrayList<byte[]>(); hosthashes.add(hosthash);
+        this.crawlQueues.errorURL.removeHosts(hosthashes, false);
         this.crawlQueues.removeURL(urlhash);
 
         // get a scraper to get the title